| 摘要 |
PROBLEM TO BE SOLVED: To provide a signal generator where noise is reduced. SOLUTION: An optional waveform generator 100 supplies an analog test signal Sout to a DUT 2. An output amplifier 18 amplifies an analog test signal Sin. A low-pass filter 4 filters an output signal S12 of an output amplifier 18, and removes noise. A first resistor R1 is disposed in series on a signal route of the subsequent stage of the low-pass filter 4. The input matched impedance Zi of the low-pass filter 4 is substantially matched with an output matched impedance Ro of the circuit block of the preceding stage. An output matched impedance Zo of the low-pass filter 4 is sufficiently higher than the input matched impedance Zi. COPYRIGHT: (C)2011,JPO&INPIT |
